PhETSolutionLab.docx - Physical Science B PhET Solution Lab...

Physical Science B
PhET Solution Lab
Investigation of a Solution’s Color
A beverage company does not know why their product has an inconsistent color
that changes over time, and from batch to batch. You have been contacted
because no one within the company has the background conceptual knowledge to
understand the factors that affect the intensity of color. It has sent you a drink mix
sample and various chemical compounds in solid form and as solutions. To
investigate them you have a concentration probe and a visible-light spectrometer.
Getting Started
 Download the sim: Concentration
 Explore all of the controls in the sim for 5 minutes.
Concentration Tab
1. Describe two (or more) ways that you can accomplish the following actions in the
simulation: 6 points total
 Change the solution volume
 Change the number of moles of solute
 Change the molarity of the solution
The first way to change the solution is by adding more solute. The second way to
change the solution volume is by adding more solvent. You must add the required
amount of the solute to the solution to increase molarity. You can lose molarity by
not putting in the required amount of solute in the solution.